The worst offender in recent memory was Walt Disney World. Starting about nine months after a physical trip to WDW, my Disney hotel reservation email address received spam from the following Disney-related enterprises before I finally black-holed the address:

- Walt Disney Studios Home Entertainment

- FX Networks

- shopDisney | Disney store

- ABC News

- Freeform

- National Geographic ("Now streaming on Disney+")

- Walt Disney Pictures

- Storyliving by Disney

You could argue that this wasn't a "sell out" since it was all Disney, but not a single one of those enterprises had much to do with a trip to Orlando. :-)